fstab : Fix sdcard num

N/A

Signed-off-by: huangqiwu <huangqiwu@xiaomi.com>
BoardConfigCommon: change CPU variant to scorpion
BoardConfigCommon: audio: disable LPA tunnel and use legacy ALSA

Disable LPA tunnel is to fix compile errors with audio-caf. Credit to dastin1015 for the LPA tunnel flag.